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Joint Transmitter and Receiver Optimization for Fast Fading Mobile Radio Channels Using Deterministic Channel Modeling

使用确定性信道建模对快衰落移动无线电信道进行联合发射机和接收机优化

基本信息

批准号：
9815002
负责人：
Alexandra Duel-Hallen
金额：
$ 32.5万
依托单位：
North Carolina State University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1999
资助国家：
美国
起止时间：
1999-06-15 至 2002-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9815002&HistoricalAwards=false
关键词：
Joint Transmitter Receiver Optimization Fast

项目摘要

The tremendous growth in demand for wireless communications capacity has created a need for new modulation, coding and detection methods that more efficiently use the multipath fading channels encountered in mobile radio. Since the channel changes rapidly, the transmitter and receiver are not generally optimized for current channel conditions, and thus fail toexploit the full potential of the wireless channel. The shorterwavelengths proposed for future mobile radio will only serve to aggravate these problems. This research focuses on joint utilization of adaptive modulation and coding techniques, transmitter diversity methods and fading prediction algorithms suitable for rapidly varying multipath fading channels.In this research, a new approach to communication over fast-fading channels is exploited. The unifying idea is to predict future fading conditions at the receiver, and to feed these predictions to the transmitter for the optimization of the transmitted signal. This research is an interdisciplinary effort in communication theory, physics, and signal processing that encompasses novel physical models for multipath fading,channel prediction and tracking methods, and adaptive modulation, coding and power-control algorithms. The ultimate goal of this work is to more fully exploit the potential capacity of wireless communication channels, and in the process reduce the associated power and bandwidth requirements.

对无线通信容量需求的巨大增长产生了对新的调制、编码和检测方法的需求，这些方法能够更有效地利用移动无线电中遇到的多径衰落信道。由于信道变化很快，发射机和接收机通常没有针对当前的信道条件进行优化，因此无法充分发挥无线信道的潜力。为未来的移动无线电提出的较短波长只会加剧这些问题。针对快速变化的多径衰落信道，结合自适应调制编码技术、发射分集方法和衰落预测算法，提出了一种新的快速衰落信道下的通信方法。统一的想法是在接收器预测未来的衰落条件，并将这些预测反馈给发射器以优化传输信号。这项研究是通信理论、物理和信号处理的交叉学科，包括多径衰落的新物理模型、信道预测和跟踪方法以及自适应调制、编码和功率控制算法。这项工作的最终目标是更充分地开发无线通信信道的潜在容量，并在此过程中降低相关的功率和带宽要求。